view test/compiler/7029152/Test.java @ 4092:b5a5f30c483d

7110173: GCNotifier::pushNotification publishes stale data. Summary: GCNotifier::pushNotification() references GCMemoryManager::_last_gc_stat but is called from GCMemoryManager::gc_end() before GCMemoryManager::_last_gc_stat is set up using the values in GCMemoryManager::_current_gc_stat. As a result the GC notification code accesses unitialized or stale data. Move the notification call after GCMemoryManager::_las_gc_stat is set, but inside the same if-block. Reviewed-by: poonam, dholmes, fparain, mchung
author johnc
date Mon, 21 Nov 2011 09:24:56 -0800
parents f9424955eb18
children
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/*
 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 7029152
 * @summary Ideal nodes for String intrinsics miss memory edge optimization
 *
 * @run main/othervm -Xbatch Test
 */

public class Test {

  static final String str = "11111xx11111xx1x";
  static int idx = 0;

  static int IndexOfTest(String str) {
    return str.indexOf("11111xx1x");
  }

  public static void main(String args[]) {
    final int ITERS=2000000;

    for (int i=0; i<ITERS; i++) {
      idx = IndexOfTest(str);
    }
    System.out.println("IndexOf = " + idx);
  }
}